A comparative study of vacuum-assisted resin transfer molding (VARTM) for sandwich panels

2003 ◽  
Vol 24 (6) ◽  
pp. 672-685 ◽  
Author(s):  
J. Dai ◽  
D. Pellaton ◽  
H. T. Hahn
Keyword(s):  
Comparative Study ◽  
Resin Transfer Molding ◽  
Sandwich Panels ◽  
Transfer Molding

Core modifications of sandwich panels fabricated by vacuum-assisted resin transfer molding

2012 ◽  
Vol 47 (15) ◽  
pp. 1853-1863 ◽  
Author(s):  
F Halimi ◽  
M Golzar ◽  
P Asadi ◽  
MH Beheshty
Keyword(s):  
Resin Transfer Molding ◽  
Sandwich Panels ◽  
Transfer Molding

Optimization of Vacuum Assisted Resin Transfer Molding for Sandwich Panels

2000 ◽  
Author(s):  
Jean Dai ◽  
Dominique Pellaton ◽  
H. Thomas Hahn
Keyword(s):  
Cost Model ◽  
Resin Transfer Molding ◽  
Sandwich Panels ◽  
Injection Pressure ◽  
Design Parameters ◽  
Manufacturing Cost ◽  
High Permeability ◽  
Transfer Molding ◽  
Advantages And Disadvantages ◽  
The Cost

Abstract The vacuum assisted resin transfer molding (VARTM) of sandwich panels may be facilitated by using high permeability layers over the skins or adding grooves in the surfaces of the core. The present paper investigates the advantages and disadvantages of both methods in terms of manufacturing cost and time through simulations and experimental observations. Before comparison, each method is optimized through simulations. The panel geometry and the injection pressure are held constant. The design parameters are the number of high permeability layers, and the number and size of grooves. The optimized processes are finally compared with each other in terms of the aforementioned cost and time. Meanwhile, the sensitivities of several important parameters in the cost model to the optimal result are studied.

Graphene nanocomposites: A review on processes, properties, and applications

2021 ◽  
pp. 152808372110242
Author(s):  
Kadir Bilisik ◽  
Mahmuda Akter
Keyword(s):  
Textile Industry ◽  
In Situ Polymerization ◽  
Resin Transfer Molding ◽  
Single Layer ◽  
Chemical Vapor ◽  
Synthesis Process ◽  
Graphene Nanocomposites ◽  
Transfer Molding ◽  
Potential Applications ◽  
Nano Graphene

In this paper, graphene, graphene/matrix, and graphene/fiber nanocomposites, including their synthesis process, fabrication, properties, and potential applications, were reviewed. It was found that several synthesis techniques for nanographene were developed, such as liquid-phase exfoliation and chemical vapor deposition. In addition, some fabrication processes of graphene/matrix and graphene/fiber-based nanocomposites were made, including in-situ polymerization, nanostitching in that single layer nano graphene plate could be interconnected by means of carbon nanotube stitching, resin transfer molding, and vacuum-assisted resin transfer molding. Several properties, including mechanical, thermal, and electrical, on the graphene nanoplatelets materials were summarized in this review paper. It was realized that graphene, graphene/matrix, and graphene/fiber nanocomposites have extraordinary mechanical, thermal, and electrical properties used in advanced engineering applications, including soft robotics, microelectronics, energy storage, biomedical and biosensors as well as textile industry.

scholarly journals A Conceptional Approach of Resin-Transfer-Molding to Rosin-Sourced Epoxy Matrix Green Composites

Aerospace ◽  
2020 ◽  
Vol 8 (1) ◽  
pp. 5
Author(s):  
Sicong Yu ◽  
Xufeng Zhang ◽  
Xiaoling Liu ◽  
Chris Rudd ◽  
Xiaosu Yi
Keyword(s):  
Composite Laminates ◽  
Resin Transfer Molding ◽  
High Viscosity ◽  
Ramie Fiber ◽  
Liquid Composite Molding ◽  
Curing Agent ◽  
Molding Process ◽  
Transfer Molding ◽  
Low Viscosity ◽  
Composite Molding

In this concept-proof study, a preform-based RTM (Resin Transfer Molding) process is presented that is characterized by first pre-loading the solid curing agent onto the preform, and then injecting the liquid nonreactive resin with an intrinsically low viscosity into the mold to infiltrate and wet the pre-loaded preform. The separation of resin and hardener helped to process inherently high viscosity resins in a convenient way. Rosin-sourced, anhydrite-cured epoxies that would normally be regarded as unsuited to liquid composite molding, were thus processed. Rheological tests revealed that by separating the anhydrite curing agent from a formulated RTM resin system, the remaining epoxy liquid had its flowtime extended. C-scan and glass transition temperature tests showed that the preform pre-loaded with anhydrite was fully infiltrated and wetted by the liquid epoxy, and the two components were diffused and dissolved with each other, and finally, well reacted and cured. Composite laminates made via this approach exhibited roughly comparable quality and mechanical properties with prepreg controls via autoclave or compression molding, respectively. These findings were verified for both carbon and ramie fiber composites.

Optimization of Resin Infusion Processing for Composite Pipe Key-Part and K/T Type Joints Using Vacuum-Assisted Resin Transfer Molding

2016 ◽  
Vol 23 (5) ◽  
pp. 1065-1078 ◽  
Author(s):  
Changchun Wang ◽  
Guanghui Bai ◽  
Guangquan Yue ◽  
Zhuxi Wang ◽  
Jin Li ◽  
...  
Keyword(s):  
Resin Transfer Molding ◽  
Resin Infusion ◽  
Transfer Molding ◽  
Composite Pipe
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